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參數(shù)資料
| 型號： | MAX7428EKA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Standard Definition Video Reconstruction Filters and Buffers |
| 中文描述： | CONTINUOUS TIME FILTER, BUTTERWORTH, LOWPASS, PDSO8 |
| 封裝： | SOT-23, MO-178, 8 PIN |
| 文件頁數(shù)： | 6/21頁 |
| 文件大小： | 444K |
| 代理商： | MAX7428EKA-T |
D/A
D/A
0.1
μ
F
0.1
μ
F
INA
INB
GND
ENCODER
75
75
75
**220
μ
F
75
C1
300k
SERIAL I/O
SYNC PULSE
IN OR OUT
OUT
V
CC
5V
REXT
DATA
SYNCIO
**220
μ
F
*1M
*1M
MAX7428
Z
0
= 75
Z
0
= 75
5V
10k
***
C1 = 1nF TO 1
μ
F (SEE TABLE 3)
*NEEDED ONLY IN FILTER BYPASS MODE
**OPTIONAL CAPACITOR
***ONLY ONE PULLUP RESISTOR NEEDED PER BUS
Figure 1. MAX7428 Typical Application Circuit
M
Detailed Description
The MAX7428/MAX7430/MAX7432 filter and buffer the
outputs of DAC encoder chipsets that process digital
video information in applications such as set-top boxes,
hard-disk recorders, DVD players, recorders, and digi-
tal VCRs. These devices also filter and
“
clean-up
”
ana-
log video signals. Each channel in the MAX7428/
MAX7430/MAX7432 includes an input mux to select the
input channel, a 6th-order Sallen-Key filter with four
adjustable high-frequency boost levels, an output
buffer with a 6dB gain, a sync detector and clamp, and
an external resistor to set internal bias levels. Output
disable adds additional multiplexing in a wired-OR con-
figuration. Filter bypass, in conjunction with the two
inputs, can be used to provide filtered and unfiltered
video signal processing. Maxim
’
s Single Pin Bus
(MSPB) interface controls all of the above features. An
external capacitor is used to assign each device a
unique address that allows control of up to 16 devices
on the same bus. Typical application circuits for the
MAX7428/MAX7430/MAX7432 are shown in Figures 1,
2, and 3.
Input Considerations
Use a 0.1μF ceramic capacitor to AC-couple the input
to the MAX7428/MAX7430/MAX7432. This input capaci-
tor stores a DC level to level-shift the input signal to an
optimal point between V
CC
and GND. The ABSEL bit on
the Control Register sets which channel (IN_A or IN_B)
is selected (
Control Register
section). The IN_A and
IN_B inputs have a typical input resistance of 50k
.
Standard Definition Video Reconstruction
Filters and Buffers
6
_______________________________________________________________________________________
Pin Description (continued)
PIN
MAX7432
13
14
—
—
—
—
MAX7430
9
10
—
—
—
—
MAX7428
—
2
1
3
5
8
NAME
FUNCTION
OUT1
V
CC
INA
INB
SYNCIO
OUT
Buffer Output 1
+5V Supply Voltage
Video Input A. Use a 0.1μF series input capacitor for proper operation.
Video Input B. Use a 0.1μF series input capacitor for proper operation.
Sync Pulse Input or Output
Buffer Output
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| MAX7428EVC16 | 功能描述:有源濾波器 Programmers, Development Systems RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7428EVKIT | 功能描述:有源濾波器 Programmers, Development Systems RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX742C/D | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX742C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX742CPP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Switch-Mode Regulator RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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